46 results about "Water aging" patented technology

The invention discloses an asphalt water-aging test method. The method comprises the steps that: required asphalt samples and equipments are prepared according to a pressure-aging-vessel-accelerated asphalt aging test specified by highway engineering asphalt and asphalt mixture testing procedures; when the samples are prepared, 10g of water is added into each sample disk; before pressure adjusting, steam with a pressure of 0.2MPa is delivered in, and a total pressure is then adjusted to 2.1MPa according to a method specified by the procedures; when the test is finished, the hot residues in the disks are poured into a vessel; the residues are heated and stirred, such that the gas bubbles are removed, and a performance test can be carried out immediately; the performances of the asphalt obtained by the test is compared with the performances of original non-aged asphalt and the performances of aged asphalt obtained by merely the pressure-aging-vessel-accelerated asphalt aging test, such that the water-aging degree of the asphalt can be accurately determined. With the testing method provided by the invention, the test data is accurate and reliable, the test method is simple and feasible, and the testing is convenient. Therefore, the method has a good popularization value.

The invention discloses an indoor aging method of rubber powder modified asphalt under joint effect of heat, oxygen and water. The method comprises the following steps of: (1) determining the pH value and the chloride concentration of the water; (2) sample preparation: pouring the molten rubber powder modified asphalt into a stainless steel flat-bottom disc; (3) short-term heat aging: aging in the asphalt test by use of a film oven; and (4) heat oxygen water aging: dividing the aging process into two stages: heat-oxygen-water aging and heat-oxygen aging. The method disclosed by the invention accurately reflects the change rules of the aging indexes of the rubber powder modified asphalt under the joint effect of multiple factors including heat, oxygen and water to obtain the heat-oxygen-water aging characteristics of the rubber powder modified asphalt, thus providing reference for the laboratory simulation of the rubber powder asphalt under the joint effect of heat, oxygen and water, providing theoretical basis and technical support for improving the road surface using quality of the rubber powder modified asphalt material and prolonging the service life, and also establishing a firm foundation for the development and application of the new material of rubber powder modified asphalt.

The invention discloses a water age measurement method for a semi-closed water area. The method comprises the following steps that: firstly, establishing the hydrodynamic force mathematical model of awater area to be measured; through the hydrodynamic force mathematical model, calculating the water depth and flow velocity information of each water quality point of the water area to be measured; constructing a convective diffusion mathematical model, and setting the boundary condition of the convective diffusion mathematical model; according to the hydrodynamic force mathematical model, calculating to obtain the water level and flow velocity information of each position of the area to be measured and the boundary condition of the convective diffusion mathematical model; calculating the concentration values of a conservative substance p and a non-conservative substance r of each moment of each water quality point of the area to be measured through the convective diffusion mathematical model; according to the concentration values of a conservative substance p and a non-conservative substance r of each moment of each water quality point of the area to be measured, calculating the instantaneous water age of each corresponding moment of each water quality point of the area to be measured; and finally, according to the instantaneous water age of each corresponding moment of each water quality point of the area to be measured, calculating a time average water age in each time period of each water quality point of the water area to be measured. By use of the method, the water age of the semi-closed water area can be efficiently, conveniently and accurately calculated.

The invention relates to a water age control system for direct drinking water purification equipment. The system comprises a flow meter, a liquid level meter, a regulating valve, a pressure meter, a water tank, a water age controller and a controller, and the flow meter is used for monitoring real-time water inlet flow; the liquid level meter is used for monitoring the real-time liquid level value of the water tank; the pressure meter is used for monitoring real-time pressure; the regulating valve is used for controlling the water inlet flow of the water tank; the water tank is used for storing direct drinking water; the controller is internally provided with an intelligent analysis engine, and the intelligent analysis engine collects water consumption data in a preset time period and trains a water consumption rule algorithm model based on the water consumption data in the preset time period. The controller obtains a future water consumption curve of a user according to the water consumption rule model, calculates a target liquid level in a future set time period according to the future water consumption curve of the user, and controls the regulating valve in real time through the water age controller according to the target liquid level. The problem of water age of direct drinking water equipment can be solved.

The invention discloses a waterproof structure for building expansion joints, which comprises: an elastic pad fixedly mounted on the expansion joint; a first waterproof component having a first drainage groove and a U-shaped first connecting portion; a second waterproof component, It has a second drainage groove and a U-shaped second connecting part. The structure of the second waterproof member is symmetrical to that of the first waterproof member. The first waterproof member and the second waterproof member pass through the first connecting part and the second waterproof member. The connecting parts are buckled together and fixedly installed on the elastic pad; after the first connecting part and the second connecting part are buckled together, there is a reserved gap between them. The invention can effectively solve the leakage problem caused by factors such as waterproof aging, shrinkage, cracking, and inconsistent foundation settlement coefficients, and solve the technical problem of anti-leakage of expansion joints in building spaces such as toilets, thereby effectively avoiding water leakage and damage in the later stage. A series of problems such as inconvenient maintenance can effectively reduce the cost of maintenance and repair in the later period and ensure the waterproof quality of construction.

Described herein are polyphenylene sulfide (PPS) polymer compositions including a low MFR PPS polymer and E-CR glass fibers. It was surprisingly discovered that the PPS polymer compositions had significantly improved retention of tensile strength and tensile elongation after water aging (water aging performance), relative to corresponding PPS polymer compositions having E glass fibers instead of the E-CR glass fibers. Moreover, it was also discovered that PPS polymer compositions including E-CR glass fibers in conjunction with a low MFR PPS polymer and a high MFR PPS polymer had unexpected synergies with respect to water aging performance, relative to corresponding polymer compositions including E-CR glass fibers and either a low MFR PPS polymer or a high MFR PPS. Due at least in part to the improved water aging performance, the PPS polymer compositions can be advantageously incorporated into application settings where the polymer composition is in contact with water. Examples include,but are not limited to, drinking water applications.

The invention discloses a thin-layer pavement material suitable for wet road and bridge decks, which includes epoxy resin cement and wear-resistant aggregate, wherein the epoxy resin cement includes a mass ratio of 1:(0.5~ 0.85) of component A and component B; the component A is mainly composed of the following raw materials in proportion by mass: epoxy resin: 60-80, toughening agent: 5-15, reactive diluent 10-30 , coupling agent 0.5-1.5; the B component is mainly composed of the following raw materials in proportion by mass: curing accelerator 5-8, curing agent 92-95. Also disclosed is a preparation method for the thin-layer pavement material suitable for wet road and bridge decks. The pavement material can be applied to wet road and bridge decks, has good skid resistance, wear resistance, outstanding interface bonding performance, waterproof, low water absorption, good boiling aging resistance, and good durability.

The invention discloses an analogy method for aging of an asphalt aqueous solution. The method comprises the following steps of: determining the pH value and the concentration of the contained mediumof an aqueous solution contacted by an outdoor service asphalt pavement under extreme conditions according to the type of the aqueous solution, and preparing an analogy aqueous solution; preparing asphalt film specimens with a film thickness of less than 1 mm after short-term thermal oxygen aging of the asphalt; and placing the asphalt film specimens in a sample tray, and using the analogy water solution to carry out a water aging erosion test according to the total effective time of outdoor water erosion. The invention provides a method in which the aqueous solution of the corresponding medium is prepared according to the type of the aqueous solution in the outdoor service environment to carry out the water erosion on the asphalt so as to simulate the water erosion during the service of the asphalt.

The invention discloses a polyvinyl chloride (PVC) material for a high-speed data cable. The polyvinyl chloride material is characterized by comprising the following components in parts by weight: 100 parts of PVC resin, 32 parts of trioctyl trimellitate, 5 parts of a calcium zinc stabilizer, 8 parts of antimony sesquioxide, 0.4 part of a lubricant, 0.2 part of an antioxidant and 10 parts of a water-resistant modifier, wherein the water-resistant modifier is formed by coating 2 parts of nano barium sulfate, 5.7 parts of calcined kaolin and 2 parts of nano silicon dioxide with 0.3 part of a silane coupling agent; and the lubricant is selected from one or more of stearic acid, barium stearate, calcium stearate, paraffin and polyethylene wax. According to the PVC material, the data cable can be used in a water-soaked environment for a long term; the mechanical stability is good, the electrical performance is stable, and the water ageing resistance performance and the water tree forming resistance performance are achieved in a wet environment, so that the stability of the data cable is further improved and the service cycle of the data cable is further prolonged.

The invention relates to a water age detection method based on a parallel primary model. The method comprises the steps of acquiring the water temperature and residual chlorine of outlet water of water supply and outlet equipment, and recording the acquisition time; carrying out a three-factor orthogonal experiment according to the collected water temperature, time and residual chlorine and the initial chlorine concentration, determining the attenuation rate of residual chlorine in the water outlet equipment, and the attenuation rate of residual chlorine comprising the rapid consumption rate of residual chlorine and the slow consumption rate of residual chlorine; establishing an Arrhenius relation model of the residual chlorine attenuation rate and the water temperature; establishing the parallel primary model according to the Arrhenius relation model to simulate the change conditions of residual chlorine and water age in the water body; and processing the parallel primary model by utilizing linear regression estimation, and approximately estimating the water age of the water outlet equipment under the condition that the current residual chlorine, the initial residual chlorine and the water temperature are known. According to the invention, intelligent and precise detection of the water age of drinking water in an urban water supply system can be realized.

The invention discloses a natural handmade soap. The handmade soap comprises the following components in parts by weight: 70-80 parts of soap grains, 10-15 parts of Sapindus chinensis extract, 3-8 parts of aged sepiolite, cocoamide 2-6 parts of propyl betaine; wherein, the extract of Sapindus chinensis is prepared according to the following method: take the dry Sapindus sativa fruit, soak in warm water equivalent to 5-10 times its weight, then boil and extract, Until the specific gravity of the obtained extract is 1.0-1.2, stop the extraction, filter, and obtain the extract of Sapindus chinensis; the sepiolite after the aging treatment is prepared according to the following method: take α sepiolite, pulverize, add water and age After 7-10 days, filter, add lime solution with a mass concentration of 1-1.5% to the obtained filter residue, soak for 7-10 days, filter, dry the filter residue, pulverize, and obtain. The handmade soap of the invention can effectively clean the skin and inhibit bacteria, and has less irritation to the skin.

The invention discloses an indoor simulated asphalt mixture aging method, which comprises the following steps: preparing asphalt mixture; performing short-term aging on the asphalt mixture; making a standard Marshall test piece, and then performing cooling and stripping; performing long-term aging; performing thermal oxidation Water aging; asphalt extraction experiment to obtain recycled asphalt; index test and component analysis of asphalt mixture and recycled asphalt; comparison of asphalt mixture and recycled asphalt data to obtain the aging degree of asphalt mixture. The invention provides an indoor simulated asphalt mixture aging method. According to the experimental method, the aging performance of the asphalt mixture can be evaluated, thereby providing theoretical guidance for practical engineering.

The invention discloses an indoor simulation asphalt mixture aging method. The method comprises the following steps: preparing an asphalt mixture; performing short-term aging on the asphalt mixture; manufacturing a standard Marshall test piece, and then performing cooling and demolding; carrying out long-term aging; carrying out hot oxygen water aging; performing an asphalt extraction experiment to obtain recycled asphalt; performing index test and component analysis on the asphalt mixture and the recycled asphalt; and comparing the asphalt mixture with the recycled asphalt data to obtain theaging degree of the asphalt mixture. According to the indoor simulation asphalt mixture aging method provided by the invention, the aging performance of the asphalt mixture can be evaluated accordingto the experimental method, so that theoretical guidance can be provided for actual engineering.

The invention belongs to the field of silicone sealing materials, in particular to a two-component silicone sealant and its application in LOW-E insulating glass. The two-component silicone sealant includes component A and component B. The two-component silicone sealant can form a stable bonding layer on the surface of LOW-E insulating glass, provide stable bonding strength, and It can achieve a very high adhesive strength retention rate under various aging conditions. Compared with the common LOW‑E insulating glass sealant on the market, it has the following beneficial effects: (1) Both the normal temperature adhesion and the water immersion aging adhesion are 100% Cohesive failure, and the strength retention rate is above 90%; (2) The aging adhesion of water purple is less than 20%, and the interface damage is less than 75%, and the strength retention rate is above 75%; (3) The high temperature and high humidity aging adhesion and The strength retention rate is significantly better than the existing products in the market.

The invention relates to a water age control system for secondary water supply equipment. The water age control system comprises a flowmeter, a liquidometer, an adjusting valve, a pressure meter, a water tank and a controller, wherein the controller is separately connected to the flowmeter, the liquidometer, the adjusting valve and the pressure meter; an intelligent analyzing engine is arranged inthe controller, collects water consumption data of a plurality of months and predicts a water consumption mode curve based on the water consumption data of the plurality of months; and the controllerjudges and classifies the water consumption nature by the water consumption mode curve, calculates a water storage curve of the water tank according to the water consumption mode curve, then acquiresa water inflow curve of the water tank according to the water storage curve and the water consumption mode curve, and controls the adjusting valve in real time according to a target water inflow. Itis ensured that tap water in the water tank is adjusted dynamically.

The invention discloses a water age measurement method for a semi-closed water area. The method comprises the following steps that: firstly, establishing the hydrodynamic force mathematical model of awater area to be measured; through the hydrodynamic force mathematical model, calculating the water depth and flow velocity information of each water quality point of the water area to be measured; constructing a convective diffusion mathematical model, and setting the boundary condition of the convective diffusion mathematical model; according to the hydrodynamic force mathematical model, calculating to obtain the water level and flow velocity information of each position of the area to be measured and the boundary condition of the convective diffusion mathematical model; calculating the concentration values of a conservative substance p and a non-conservative substance r of each moment of each water quality point of the area to be measured through the convective diffusion mathematical model; according to the concentration values of a conservative substance p and a non-conservative substance r of each moment of each water quality point of the area to be measured, calculating the instantaneous water age of each corresponding moment of each water quality point of the area to be measured; and finally, according to the instantaneous water age of each corresponding moment of each water quality point of the area to be measured, calculating a time average water age in each time period of each water quality point of the water area to be measured. By use of the method, the water age of the semi-closed water area can be efficiently, conveniently and accurately calculated.